Ancient Supercontinents and the Paleogeography of Earth

Lauri J. Pesonen is an Emeritus Professor of solid earth geophysics at Physics Department of University of Helsinki. He is a graduate at the Helsinki University of Technology and obtained PhD in 1978 at the University of Toronto. He is a member of the Finnish Academy of Science and Letters and has been the president of the Geophysical Society of Finland, and the Chair of Divison III (Paleomagnetism) of IUGG/IAGA during 1993 97. The IUA AU:1 nominated the asteroid 1979A as "Pesonen according to his activities in studies of super continents and meteorite impacts. He received the Knight Medal of the First Class Finnish Lion in 1995. Lauri is author or coauthor of over 150 peer-reviewed articles. He initiated the Nordic Paleomagnetism Workshops and was a key-person in the developments of the Precambrian (PALEOMAGIA) and Holocene (GEOMAGIA) paleomagnetic databases. Lauri organized the International Supercontinent Symposium in 2012 in Helsinki. He has had academic (teaching and research) positions in Canada, Estonia, Norway, Germany, India, and Colombia. His research topics spread from supercontinents to the Earth's ancient magnetic field, impact structures, meteorite petrophysics, archeomagnet ism, environmental magnetism, and biomagnetism. He has built three paleomagnetism laboratories, the first one at the Geological Survey of Finland, the second at the University of Helsinki, the third in Tarto University, Estonia. His latest interests include constructions of exhibitions of meteorites and impactites at several Finnish museums. Johanna M. Salminen is a Docent at the University of Helsinki and has been leading the research of its Solid Earth Geophysics Laboratory during 2014 21. Since August 2021, she has been the Director of the Geophysical Laboratory of the Geological Survey of Finland. She earned an MSc in Geophysics (2004) and a PhD in Solid Earth Geophysics (2009) from the University of Helsinki. Her research interests lie in continental reconstructions, Precambrian supercontinents, deep-time evolution of the Earth, Cenozoic magnetostrati graphy, environmental magnetism, and biomagnetism. Her professional recognitions include Academy of Finland Research Fellowship (2015 20) and Early Career Scientist Award by the International Union of Geodesy and Geophysics (IAGA) (2015). She is a coleader of the Deep Time Digital Earth paleomagnetism working group Sten-ke Elming is Prof. Emeritus in Geophysics, , Department of Civil, Environmental and Natural Resources Engineering, Lule University of Technology. He is a graduate of Uppsala University and obtained a PhD in Geophysics at Lule University of Technology (1982). Sten-ke is an elected member of the Royal Swedish Academy of Sciences (2006) and was a member of the Academy jury for the Craaford prize in geosciences, 2014. He has been in the committee and steering group for geosciences of the Swedish Natural Science Research Council. He has been building research capacity and departments in Geophys...

1. Precambrian supercontinents and supercycles--an overview
2. A mantle dynamics perspective on the drift of cratons and supercontinent formation in Earths history
3. Precambrian geomagnetic field: An overview
4. The Precambrian paleogeography of Laurentia
5. The Precambrian drift history and paleogeography of Baltica
6. The Precambrian drift history and paleogeography of Amazonia
7. The Precambrian drift history and paleogeography of Rio de la Plata craton
8. The Precambrian paleogeography of Siberia
9. Whence Australia: Its Precambrian drift history and paleography
10. The Precambrian drift history and paleogeography of India
11. The Precambrian drift history and paleogeography of the Chinese cratons
12. The Precambrian drift history and paleogeography of Kalahari Craton
13. Constraints on the Precambrian paleogeography of West African Craton
14. The Precambrian drift history and paleogeography of Congo-So Francisco craton
15. Neoarchean-Paleoproterozoic supercycles
16. Paleo-Mesoproterozoic Nuna supercycle
17. Meso-Neoproterozoic Rodinia supercycle
18. Phanerozoic paleogeography and Pangea
19. An expanding list of reliable paleomagnetic poles for Precambrian tectonic reconstructions